...Ok you lost me. How is this thread NOT about discussing your theories? You're saying that square put statements disguised as random quotes into the game; that counts as a theory.

Quote Originally Posted by Future Esthar
The guy talked about having it´s hometown polluted.
He says no one spot the transformation when they look at it everyday.
But he realized it when he came to Balamb and saw the clear blue waters..
That’s when he says the upper quote.
This could just as easily be used to tie in with the game’s theme of memory than it is with a statement from square. It seems like he was saying (based on your…interesting paraphrasing) that as the water began to slowly change, he had begun to forget its original purity. This in itself can be tied in with Ultimecia’s final monologue:

Time...
It will not wait...
No matter how hard you hold on.
It escapes you. And...
Now, what is presented in that pic:

There must be many things in this world that fade away unnoticed
The lines seem to share a similarity, portraying the message that time will inevitably change everything within the world, and the changes will go unnoticed. There is just as much proof (ie ZERO) that the quote you provided links to Ultimecia’s final lines as it is any form of statement. Thus, as you can see, in the end it is impossible to tell what Square truly intended by those lines. Maybe it is some form of secret message, or maybe it was just something they through in there because they needed to provide dialogue for another f@#$ing NPC.

I seriously doubt you will be able to prove anything with this line, there just isn’t enough within it to properly support a well constructed thesis.